Description

(4-Methylphenyl)(2,4,6-Trimethylphenyl)Iodonium Triflate is a high-purity diaryliodonium salt, a critical class of photoacid generators (PAGs) used in advanced photoresist formulations. This compound matters for its exceptional efficiency in generating strong acids upon exposure to UV or deep-UV light, enabling precise patterning in microelectronics. It is essential for manufacturers and R&D teams in the semiconductor, photopolymer, and advanced materials industries who require reliable, high-performance cationic photoinitiators for lithography and cross-linking applications.

Application

• Semiconductor Photolithography: A key photoacid generator (PAG) in chemically amplified resists (CARs) for deep-UV (DUV) and extreme-UV (EUV) lithography processes.
• Advanced Polymer Synthesis: Initiator for cationic polymerization of epoxides, vinyl ethers, and other monomers under UV light for coatings and adhesives.
• Microfabrication & PCB Manufacturing: Used in photo-imageable solder masks and dielectric layers for high-density interconnect (HDI) printed circuit boards.
• Optical Materials: Employed in the fabrication of waveguides, optical fibers, and other photonic components requiring precise photopatterning.
• 3D Printing & Additive Manufacturing: Photoinitiator for stereolithography (SLA) and other vat polymerization techniques to cure resin-based parts.
• Analytical Chemistry & Research: A valuable reagent in organic synthesis for exploring new arylations and as a catalyst in photoredox reactions.

Basic Information

Product Name	(4-Methylphenyl)(2,4,6-Trimethylphenyl)Iodonium Triflate
CAS No.	1204518-02-4
Molecular Formula	C₁₇H₁₈F₃IO₃S
Molecular Weight	502.29 g/mol
Synonyms	(p-Tolyl)(mesityl)iodonium Trifluoromethanesulfonate; (4-Methylphenyl)(2,4,6-Trimethylphenyl)Iodonium Trifluoromethanesulfonate; Mesityl(p-tolyl)iodonium Triflate; Diaryliodonium Triflate Salt; Photoacid Generator PAG; Iodonium, (4-methylphenyl)(2,4,6-trimethylphenyl)-, salt with 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide (1:1)
EINECS	Contact for details

Quality Control

Our (4-Methylphenyl)(2,4,6-Trimethylphenyl)Iodonium Triflate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and ICP-MS for trace metal analysis, to ensure compliance with exacting industry standards for electronic-grade chemicals. Certificates of Analysis (COA) detailing all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) in a desiccated environment to maintain stability and prevent decomposition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Trace Metals (ICP-MS)	< 10 ppm total

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.